Herb,
Lawson, "Yagi Antenna Design" , and later Leeson, "Physical Design of Yagi
Antennas" (both ARRL publications, but probably now out of print), cover
the calculation of the electrical length of the HyGain clamps, and Leeson
also calculates the equivalent parameters for other boom-to-element schemes
in common use (Chapter 9). That would be a great starting point. Beezley
(?) also included the HyGain clamp calculations in his YO (Yagi Optimizer)
design program.
If you don't have access to any of those resources, I can attempt to
summarize the pertinent details.
73,
geo - n4ua
On Wed, May 28, 2014 at 6:47 AM, Herbert Schoenbohm <
herbert.schoenbohm@gmail.com> wrote:
> I am currently rebuilding my six meter six element beam and would like to
> use Hygain element to boom clamps. Are there any standard conversions for
> element length different to a standard u-bolt or insulated top mounted
> element clamp? I believe you are required to add the boom diameter to the
> overall element length but is there any other consideration as a genera
> rule? The Hy-gain clamps seem to be considerably more durable for yagi
> construction than drilling a hole through the element and thus creating a
> weak point.
>
>
> Please let me know. Thanks
>
>
> Herb Schoenbohm, KV4FZ
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